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Andreas Kling 5387a19268 Kernel: Make Process::file_description() vend a RefPtr<FileDescription> 
This encourages callers to strongly reference file descriptions while
working with them.

This fixes a use-after-free issue where one thread would close() an
open fd while another thread was blocked on it becoming readable.

Test: Kernel/uaf-close-while-blocked-in-read.cpp
2020-01-07 15:53:42 +01:00
..
uaf-close-while-blocked-in-read.cpp
Kernel: Make Process::file_description() vend a RefPtr<FileDescription>
2020-01-07 15:53:42 +01:00